> For the complete documentation index, see [llms.txt](https://docs.fluentbit.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fluentbit.io/manual/4.0/stream-processing/get-started.md).

# Get started

| Concept | Description                                                                                                                                                                                                                    |
| ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Stream  | A stream is a single flow of data being ingested by an input plugin. By default, each stream name is the name of its input plugin plus a number (for example, `tail.0`). You can use the `alias` property to change this name. |
| Task    | A single execution unit. For example, a SQL query.                                                                                                                                                                             |
| Results | After a stream processor runs a SQL query, results are generated. You can re-ingest these results back into the main Fluent Bit pipeline or redirect them to the standard output interface for debugging purposes.             |
| Tag     | Fluent Bit groups records and assigns tags to them. These tags define routing rules and can be used to apply stream processors to specific tags that match a pattern.                                                          |
| Match   | Matching rules can use a wildcard to match specific records associated with a tag.                                                                                                                                             |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.fluentbit.io/manual/4.0/stream-processing/get-started.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.